646026422 has 16 divisors (see below), whose sum is σ = 1024700544. Its totient is φ = 304968000.

The previous prime is 646026413. The next prime is 646026431. The reversal of 646026422 is 224620646.

It is an interprime number because it is at equal distance from previous prime (646026413) and next prime (646026431).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124529 + ... + 129612.

It is an arithmetic number, because the mean of its divisors is an integer number (64043784).

Almost surely, 2^646026422 is an apocalyptic number.

646026422 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

646026422 is a deficient number, since it is larger than the sum of its proper divisors (378674122).

646026422 is a wasteful number, since it uses less digits than its factorization.

646026422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254215.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 646026422 is about 25417.0498288059. The cubic root of 646026422 is about 864.4703327333.

The spelling of 646026422 in words is "six hundred forty-six million, twenty-six thousand, four hundred twenty-two".